Posted on: January 30, 2017 at 12:56 pm
Last updated: September 22, 2017 at 1:56 pm

The human body is a weird and wonderful thing. Most “facts lists” out there are full of myths, misconceptions, or just plain made-up facts. But for our list, we painstakingly found a credible source for every last fact (all the sources are below). If you learned something, don’t forget to share this article on Facebook!

  1. The cornea has no blood vessels. It gets oxygen from the air–the only body part to do this.
  2. The neurons in your brain work together to give you the equivalent of a million gigabytes of computer storage.
  3. A newborn child can breathe and drink at the same time. Useful for breastfeeding!
  4. There are 22 bones of the skull.
  5. The nerve impulses sent from the brain move at 274 km/h.
  6. Your heart pumps more than 228 million liters of blood during the average lifetime.
  7. The scientific name for the belly button is the umbilicus.
  8. 25% of your body’s oxygen goes to the brain.
  9. Your heart beats over a billion times by your thirtieth birthday.
  10. Red blood cells are built in your bone marrow.
  11. The reason humans can have different skin colors is melanin. More melanin means darker skin.
  12. The lungs have a surface area of 70 square meters.
  13. When someone is sleeping deeply, you’ll see their eyes moving rapidly beneath their eyelids.
  14. Most adults have around 32 teeth.
  15. The smallest bone in your body is in the ear. The stirrup bone is only 2.8 millimetres long.
  16. Your nose and ears never stop growing.
  17. Infants don’t need to blink as much as adults.
  18. Your tongue is as unique as your fingerprint.
  19. Antibiotics don’t kill viruses.
  20. Teeth cannot repair themselves.
  21. On average, a person can fall asleep in seven minutes.
  22. Most people chew their food mainly on the same side as their dominant hand.
  23. Only about 10% of people are left-handed.
  24. Certain fragrances, like apples and bananas, have been shown to aid weight loss.
  25. If it grew for a whole lifetime at the normal rate, your hair would be 40 feet long.
  26. The total weight of the bacteria in the human body is 200g, or about as heavy as a bar of soap.
  27. 99% of the calcium contained in the human body is in bones and teeth.
  28. The total bite force of your mouth is about 195 kilograms.
  29. The human mouth contains over 700 different species of bacteria, and over 50% of them have not been fully studied by scientists.
  30. Parthenophobia is the fear of virgins.
  31. The human body should contain about 3-4 grams of iron.
  32. There are more than 100 different viruses which cause a cold.
  33. Kissing prevents tooth decay.
  34. You spend 150 calories per hour if you hit your head against the wall.
  35. You shed about 30-40 thousand skin cells per hour.
  36. People who smoke cigarettes are 20 times more likely to develop lung cancer than nonsmokers.
  37. Blinking gives your brain a tiny rest.
  38. You can be addicted to shooting guns.
  39. People with blue eyes are less sensitive to pain than others.
  40. If you laid the blood vessels in your body end to end, it would go around the earth two and a half times.
  41. The human eye is so sensitive that it can spot a candle in the night from 30 miles away.
  42. Your stomach lining blushes whenever your cheeks do.
  43. Most good readers can read between 250-400 words per minute, about as fast as an auctioneer speaks.
  44. Your belly button, or umbilicus, supports a bacterial ecosystem comparable to the rainforest.
  45. The eye can process ultraviolet light, but it’s filtered by the eye’s lens. Without the lens, you can see it just fine.
  46. There are about 7,000,000,000,000,000,000,000,000,000 atoms in your body.
  47.  In extreme circumstances, your body is capable of a lot more strength than you know. It’s called hysterical strength.
  48.  The human body is the best long distance runner in the animal kingdom.
  49. A full head of human hair is strong enough to support 12 tons.
  50. The human body gives off about as much energy as a light bulb.

Know a cool fact we didn’t list? Comment and tell us- we’d love to hear it!

  5. Behavioral Teratogenesis and Behavioral Mutagenesis: A Primer in Abnormal Development By E.L. Abel, page 113
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